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From page 116... ... 116 Summary of Durability Evaluation Methods 1.0 Introduction This appendix summarizes the most commonly accepted independent (i.e., not published by a pipe trade organization) quantitative service life calculation methods for concrete and metal pipes. Read the entire page →
From page 117... ... 117 where: EMSL = estimated material service life (years) pH = pH of the water Slope = pipe invert slope (%) Read the entire page →
From page 119... ... 119 3.0 Metal Pipe Methods The design service life of corrugated metal pipes will normally be the period in years from installation until deterioration reaches the point of either perforation of any point on the culvert or some specified percent of metal loss. Different methods used to estimate service life use different definitions of service life. Read the entire page →
From page 120... ... 120 Table 4. Galvanized steel pipe gage thickness factors -- California method. Read the entire page →
From page 121... ... 121 For pH values between 5.0 and 7.3: 17.24 log log 2160 2490 logEMSL R pH[ ] Read the entire page →
From page 123... ... 123 Table 6. Galvanized steel pipe gage thickness factors -- FLH method. Read the entire page →
From page 124... ... 124 Table 7. Galvanized steel pipe gage thickness factors -- Florida DOT method. Read the entire page →
From page 125... ... 125 M T O G R A V I T Y P I P E D E S I G N G U I D E L I N E S ( M A Y 2 0 0 7 ) Table C9.0 EMSL for Steel Pipe Coatings / Laminations Water Side Coating3 EMSL Max. Read the entire page →
From page 126... ... 126 Gage 18 16 14 12 10 8 Factor -- 1.0 1.3 1.8 2.3 2.8 Table 8. Aluminized steel (Type 2) Read the entire page →
From page 128... ... 128 Each material type with a quantitative estimation method will be analyzed for three different example cases; namely, an aggressive case, a moderate case, and a non-aggressive case. The three different cases differ in the assumed environmental parameters, as indicated below in Table 9. Read the entire page →
From page 129... ... 129 4.3 Aggressive Case Table 13 contains results obtained by using the aforementioned equations and charts to estimate material service life for the aggressive case. 4.4 Discussion of Results A number of observations can be made based on these results: • There is a wide variety in the EMSL values for different pipe types. Read the entire page →
From page 130... ... 130 4.5.1 MTO HiDISC 1.0 Example Screen Captures Data Input – Culvert Details Data Input – Hydraulics Read the entire page →
From page 131... ... 131 Data Input – Durability Data Input – Durability Read the entire page →
From page 132... ... 132 Data Input – Durability Output - Steel Read the entire page →
From page 133... ... 133 Output - Concrete 4.5.2 FDOT CSLE 2013 (version 5.1.3.2) Example Screen Captures Data Output Read the entire page →
From page 134... ... 134 4.5.3 Caltrans AltPipe (version 6.08) Example Screen Captures Data Input Read the entire page →
From page 135... ... 135 Output - Steel Output – Concrete, Aluminum, and Plastic Read the entire page →
From page 136... ... Abbreviations and acronyms used without deﬁnitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012) NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) Read the entire page →

From page 116...

... 116 Summary of Durability Evaluation Methods 1.0 Introduction This appendix summarizes the most commonly accepted independent (i.e., not published by a pipe trade organization) quantitative service life calculation methods for concrete and metal pipes.